C# SteamBot - 获取交易报价状态

本文关键字:状态 交易 获取 SteamBot | 更新日期: 2023-09-27 17:56:36

我使用以下代码时出错:

var offer = Bot.NewTradeOffer(dbSteamId);
    offer.Items.AddMyItem(730, 2, 2611100148);
    if (offer.Items.NewVersion)
    {
        string newOfferId;
        if (offer.SendWithToken(out newOfferId, dbToken, dbMessage))
        {
            Log.Success("Trade offer sent : Offer ID " + newOfferId);
            Bot.TryGetTradeOffer(newOfferId, out offer);
        }
     }

它崩溃并显示错误:

ERROR: System.NullReferenceException: Object reference not set to an instance of an object. 
at SteamTrade.TradeOffer.TradeOfferManager.IsOfferValid(Offer offer) in C:'Users'Robertas'Desktop'SteamBot-master'SteamTrade'TradeOffer'TradeOfferManager.cs:line 130
at SteamTrade.TradeOffer.TradeOfferManager.GetOffer(String offerId, TradeOffer& tradeOffer) in C:'Users'Robertas'Desktop'SteamBot-master'SteamTrade'TradeOffer'TradeOfferManager.cs:line 162
at SteamBot.Bot.TryGetTradeOffer(String offerId, TradeOffer& tradeOffer) in C:'Users'Robertas'Desktop'SteamBot-master'SteamBot'Bot.cs:line 331
at SteamBot.TradeOfferUserHandler.SendTradeOffer() in C:'Users'Robertas'Desktop'SteamBot-master'SteamBot'TradeOfferUserHandler.cs:line 81
at SteamBot.TradeOfferUserHandler.OnLoginCompleted() in C:'Users'Robertas'Desktop'SteamBot-master'SteamBot'TradeOfferUserHandler.cs:line 64
at SteamBot.Bot.<HandleSteamMessage>b__5(LoginKeyCallback callback) in C:'Users'Robertas'Desktop'SteamBot-master'SteamBot'Bot.cs:line 476
at SteamKit2.CallbackMsgExtensions.Handle[T](ICallbackMsg msg, Action`1 handler)
at SteamBot.Bot.HandleSteamMessage(ICallbackMsg msg) in C:'Users'Robertas'Desktop'SteamBot-master'SteamBot'Bot.cs:line 458
at SteamBot.Bot.BackgroundWorkerOnDoWork(Object sender, DoWorkEventArgs doWorkEventArgs) in C:'Users'Robertas'Desktop'SteamBot-master'SteamBot'Bot.cs:line 941

有什么想法吗?也许您知道检查交易报价状态的不同方法?请分享您的想法。谢谢!

编辑:

public bool GetOffer(string offerId, out TradeOffer tradeOffer)
{
    tradeOffer = null;
    var resp = webApi.GetTradeOffer(offerId);
    if (resp != null)
    {
        if (IsOfferValid(resp.Offer))
        {
            tradeOffer = new TradeOffer(session, resp.Offer);
            return true;
        }
        else
        {
            //todo: log steam api is giving us invalid offers.
            Console.WriteLine("Offer returned from steam api is not valid : " + resp.Offer.TradeOfferId);
        }
    }
    return false;
}

或优惠无效。怎么可能为空?我可以提到,当机器人发送到我的帐户时一切正常,但是当它发送到其他帐户时,它会崩溃。

编辑#2:

好的,我发现了错误。这是通过得到回应的问题。当我称之为(http://api.steampowered.com/IEconService/GetTradeOffer/v1/?key=48B9FCE3FE8A74ADDA29174BFD47441B&tradeofferid=530787948&language=en_us):

{
"response": {
}

}

当我称之为(http://api.steampowered.com/IEconService/GetTradeOffer/v1/?key=48B9FCE3FE8A74ADDA29174BFD47441B&tradeofferid=530796219&language=en_us):

{
"response": {
    "offer": {
        "tradeofferid": "530796219",
        "accountid_other": 213128749,
        "message": "Security Code: HqaMyUDN",
        "expiration_time": 1435675048,
        "trade_offer_state": 2,
        "items_to_receive": [
            {
                "appid": "730",
                "contextid": "2",
                "assetid": "2275856684",
                "classid": "310776767",
                "instanceid": "0",
                "amount": "1",
                "missing": false
            }
        ]
        ,
        "is_our_offer": false,
        "time_created": 1434465448,
        "time_updated": 1434465448,
        "from_real_time_trade": false
    },...

知道为什么一个响应是空的,而另一个是正常的吗?

C# SteamBot - 获取交易报价状态

您似乎正在使用 SteamBot 库。 由于它的源代码是现成的,请查看GetTradeOffer方法的源代码,在这里找到:TradeOfferWebApi源代码。

很明显,从此方法接收非空响应并不能保证它将包含有效的 Offer 对象。 您的支票或因此,产品/服务应首先验证它不为 null:

    if (resp != null)
    {
        if (resp.Offer != null && IsOfferValid(resp.Offer))

至于确定为什么它不为空:获取 SteamBot 的源代码,在调试器中运行您的应用程序 + SteamBot 项目,然后单步进入该方法。 根据 GetTradeOffer 方法的源代码,它很可能会引发异常。

考虑到代码中"待办事项"注释的数量,该库似乎正在进行中,因此使用 SteamBot 源代码运行可能有助于调试目的(您可以轻松修改源代码以实际将异常记录到对您有用的目标)。

编辑

(响应OP的编辑#2):从文档到Steam的IEconService API,帐户只能检索有关该帐户的报价信息。 可能的解释是,要么你传递了无效的产品/服务 ID(你可能已排除),要么运行应用的帐户无权查看此优惠。